US Bridges

Ill 100 over Graham Hollow Creek

Fair

Jersey County, Illinois · 1.2M N Grafton · Structure no. 042200200000000

Built
1938
87 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
1,850
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 100 over Graham Hollow Creek is a concrete continuous culvert carrying Ill 100 over Graham Hollow Creek in Jersey County, Illinois. It was built in 1938, so it is 87 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,850 vehicles a day, roughly 9% of them trucks, projected to reach 1,768 by 2046. The structure is 26 ft (8 m) long. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesIll 100
CrossesGraham Hollow Creek
Location1.2M N Grafton
RouteState Highway 100
CountyJersey County
StateIllinois
Coordinates38.97229, -90.48167
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.3 US tons
Inventory rating53.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length26 ft (8 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,850 (2023)
Projected traffic1,768 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ill 100 over Graham Hollow Creek built?

It was built in 1938, making it 87 years old in 2025.

What condition is Ill 100 over Graham Hollow Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2023.

How much traffic does Ill 100 over Graham Hollow Creek carry?

About 1,850 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Ill 100 over Graham Hollow Creek?

The structure is 26 ft (8 m) long with a longest span of 12 ft (3.7 m).

Who owns Ill 100 over Graham Hollow Creek?

It is owned by the State Highway Agency.